Nonreciprocal CRLH Transmission Line Using Active Circuit-Loaded Ring Resonators

Experimental verification of nonreciprocal electromagnetic metasurface in a finite‐size array

“…Various methods, including the use of metamaterials and metasurfaces, have been explored to manipulate radio wave characteristics [1,2]. In recent years, there has been a surge in research on nonreciprocityrelated metasurfaces as a novel approach to space-based radio wave control [3][4][5], addressing the need for both symmetric and spatially asymmetric functions [6,7]. Nonreciprocal metasurface technology has the potential for beneficial applications in electromagnetic interference protection, electromagnetic security enhancement, and radio stealth.…”